Hari ni aku nak kongsikan berkenaan tajuk di atas. Apa itu Supraventricular Tachycardia? Kenapa aku nak kongsikan tentang penyakit ni? Alkisahnya, one of my colleague suddenly being admitted in ICU recently. As a HR team, we have to know the diagnosis to fill up the form for them. She was admitted in ICU for 1 day and then transferred to normal ward for 1 day also.
At first, bila kami tanya ward, apa diagnosis dia. Diorang cakap SVT. Hah?? Ape kebendanya SVT tu? Of course la aku tak tahu. Aku bukan orang medic. Then, bila dia dah mula bekerja, we all ask her what happened actually. Then she tell us the story.
Awal pagi tu masa tengah siap-siap nak pergi kerja, dia tiba-tiba rasa jantung dia berdegup sangat laju. Jadi, dia pon baring sekejap. Tak panik sebab dia nurse. Lepas baring tu masih tak lega. Jadi dia pon bersiap-siap la jugak. Hantar anak pegi sekolah dan drive la pegi keje. Masa dalam perjalanan tu dia rasa stereng kereta bergegar. Bila dah sampai dia terus pegi ke bahagian kecemasan. Bila nurse & medical officer check heartbeat dia masa tu, memang sangat laju. Then doktor terus siap-siapkan dia untuk transfer to ICU.
What will happen if I feel this kind of thing? Of course la aku akan diagnos diri aku sebagai Anxiety Disorder. Hahaha. Suka hati aku je jadi doktor sendiri. Sebelum ni mungkin aku juga mengalami SVT ni tapi bukan AD. Sebab everytime aku rasa heart beat aku laju tu, aku tak penah on the spot pegi hospital to get treatment. Makanya, tak tahu la diagnosis sebenar. Aku pegi hospital biasa after dah ok sikit. Nak tahu penjelasan lanjut mengevai SVT ni? Baca kat bawah ya..
What is supraventricular tachycardia?
Supraventricular tachycardia (SVT) means that from time to time yourheart beats very fast for a reason other than exercise, high fever, or stress. For most people who have SVT, the heart still works normally to pump blood through the body.
Types of SVT include:
- Atrioventricular nodal reentrant tachycardia (AVNRT).
- Atrioventricular reciprocating tachycardia (AVRT), including Wolff-Parkinson-White syndrome.
During an episode of SVT, the heart's electrical system doesn't work right, causing the heart to beat very fast. The heart beats at least 100 beats a minute and may reach 300 beats a minute. After treatment or on its own, the heart usually returns to a normal rate of 60 to 100 beats a minute.
SVT may start and end quickly, and you may not have symptoms. SVT becomes a problem when it happens often, lasts a long time, or causes symptoms.
SVT also is called paroxysmal supraventricular tachycardia (PSVT) or paroxysmal atrial tachycardia (PAT).
What causes SVT?
Most episodes of SVT are caused by faulty electrical connections in the heart 
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SVT also can be caused by certain medicines. Examples include very high levels of the heart medicine digoxin or the lung medicine theophylline.
Some types of SVT may run in families, such as Wolff-Parkinson-White syndrome. Other types of SVT may be caused by certain health problems, medicines, or surgery.
What are the symptoms?
Some people with SVT have no symptoms. Others may have:
- Palpitations, a feeling that the heart is racing or pounding.
- A pounding pulse.
- A dizzy feeling or may feel lightheaded.
Other symptoms include near-fainting or fainting (syncope), shortness of breath, chest pain, throat tightness, and sweating.
How is SVT diagnosed?
Your doctor will diagnose SVT by asking you questions about your health and symptoms, doing a physical exam, and perhaps giving you tests. Your doctor:
- Will ask if anything triggers the fast heart rate, how long it lasts, if it starts and stops suddenly, and if the beats are regular or irregular.
- May do a test called an electrocardiogram (EKG, ECG). This test measures the heart's electrical activity and can record SVT episodes.
If you do not have an episode of SVT while you're at the doctor's office, your doctor probably will ask you to wear a portable electrocardiogram(EKG), also called an ambulatory electrocardiogram. When you have an episode, the device will record it.
Your doctor also may do tests to find the cause of the SVT. These may include blood tests, a chest X-ray, and an echocardiogram, which shows the heart in motion.
How is it treated?
Some SVTs don't cause symptoms, and you may not need treatment. If you do have symptoms, your doctor probably will recommend treatment.
To treat sudden episodes of SVT, your doctor may:
- Prescribe a medicine to take when the SVT occurs.
- Show you how you can slow your heart rate on your own. You may be able to do this by coughing, gagging, or putting your face in ice-cold water. These are called vagal maneuvers.
If these treatments don't work, you may have to go to your doctor's office or the emergency room. You may get a fast-acting medicine such as adenosine or verapamil. If the SVT is serious, you may have electrical cardioversion, which uses an electrical current to reset the heart rhythm.
If you often have episodes of SVT, you may need to:
- Take medicine every day to prevent the episodes or slow your heart rate.
- Try catheter ablation. This procedure destroys a tiny part of the heart that causes the problem.
What can you do at home to prevent SVT?
You can try some things at home to help prevent SVT by avoiding the things that trigger it. Examples of things you can try:
- Limit or do not drink alcohol.
- Don't smoke.
- Avoid over-the-counter decongestants, herbal remedies, diet pills, and "pep" pills.
- Don't use illegal drugs, such as cocaine, ecstasy, ormethamphetamine.
To find your triggers, keep a diary of your heart rate and your symptoms. You might find, for example, that smoking or alcohol causes your SVT episodes.
WebMD Medical Reference from Healthwise
Last Updated: March 12, 2014
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